Re etsa hore re etsetse tlhahiso ea tlhahiso ea lilemo tse 15, tlhahiso ea linyeoe tsa 200000 ka letsatsi le le leng, bonyane mefuta ea mefuta e mengata ea boleng le theko.
Asia Boroa, Asia Boroa-bochabela, Afeuast, Africe, ea Afrika Bokaholimo bochabela, Westm Europe.
Ka kopo fana ka litlhahiso tse ntle ho rona, re ka khona ho latela tlhaiso-leseling ea hau e ntle ho uena.
Re tlameha ho sheba boleng ba hau ba mohlala, o ka romella sampole ho US Bu Express kapa u romelle mohlala oa mohlala.
U ka romella lemmello ho rona, re tla ea ka sampole ea hau ebe re romela sampole ea rona ho uena.
Tsela e molemohali eo u ka e romellang lese mehlala eo re ka e khethang, le rona re tla hlahloba litšenyehelo le ho fana ka theko e nepahetseng ho uena, kamora hore o ka ikopanya le rona ho etsa odara.